T5 Toolbar hooks: Adds a toolbar item with the current page hooks.

toolbar-hooks.php

<?php # -*- coding: utf-8 -*-
/**
 * Plugin Name: T5 Toolbar hooks
 * Description: Adds a toolbar item with the current page hooks.
 * Version:     2012.06.19
 * Author:      Thomas Scholz <info@toscho.de>
 * Author URI:  http://toscho.de
 * License:     MIT
 * License URI: http://www.opensource.org/licenses/mit-license.php
 */

add_action( 'admin_print_footer_scripts', 't5_toolbar_hooks' );
function t5_toolbar_hooks()
{
	global $hook_suffix, $current_screen;

	$hooks = array (
		"admin_print_styles-$hook_suffix",
		"admin_print_scripts-$hook_suffix",
		"admin_head-$hook_suffix",
		"admin_footer-$hook_suffix",
		'$pagenow: ' . $current_screen->id
	);
	$type = empty ( $current_screen->post_type )
		? FALSE : $current_screen->post_type;
	$type && $hooks[] = '$typenow: ' . $type;
	?>
<script>jQuery(function($) {
	var linkCss = {
		'padding':    '0 10px',
		'cursor':     'pointer',
	},
	hookboxcss = {
		'background': '#fff',
		'border':     '4px solid #080',
		'color':      '#000',
		'display':    'none',
		'font':       '1em/1.2 monospace',
		'padding':    '5px',
		'position':   'absolute',
		'right':      '0px',
		'top':        '28px',
		'width':      '300px'
	},
	hookbox  = $('<pre><?php print implode( '\n', $hooks ); ?></pre>')
				.css(hookboxcss),
	hooklink = $('<a>Hooks</a>')
				.click(function(){ hookbox.toggle(); })
				.css(linkCss),
	li       = $('<li></li>')
				.append(hooklink)
				.append(hookbox);

	$('#wp-admin-bar-top-secondary').append(li);
});</script><?php
}